I have a black iPhone 4 16gb Verizon. Clean ESN and ready to activate. It is fairly clean and functions 100%. I have box, charger, cable and unused earphone. I switched the carrier to t-mobile after the contract period ended with Verizon Wireless. Now I use Nexus 4 by google with tmobile. I would like to trade my iPhone with another iPhone unlocked/ jail broken so I can add a line with t-mobile.